reactos/sdk/include/reactos/libs/mbedtls/aesni.h

   1 /**
   2  * \file aesni.h
   3  *
   4  * \brief AES-NI for hardware AES acceleration on some Intel processors
   5  *
   6  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
   7  *  SPDX-License-Identifier: Apache-2.0
   8  *
   9  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
  10  *  not use this file except in compliance with the License.
  11  *  You may obtain a copy of the License at
  12  *
  13  *  http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  *  Unless required by applicable law or agreed to in writing, software
  16  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  17  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  *  See the License for the specific language governing permissions and
  19  *  limitations under the License.
  20  *
  21  *  This file is part of mbed TLS (https://tls.mbed.org)
  22  */
  23 #ifndef MBEDTLS_AESNI_H
  24 #define MBEDTLS_AESNI_H
  25
  26 #include "aes.h"
  27
  28 #define MBEDTLS_AESNI_AES      0x02000000u
  29 #define MBEDTLS_AESNI_CLMUL    0x00000002u
  30
  31 #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) &&  \
  32     ( defined(__amd64__) || defined(__x86_64__) )   &&  \
  33     ! defined(MBEDTLS_HAVE_X86_64)
  34 #define MBEDTLS_HAVE_X86_64
  35 #endif
  36
  37 #if defined(MBEDTLS_HAVE_X86_64)
  38
  39 #ifdef __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 /**
  44  * \brief          AES-NI features detection routine
  45  *
  46  * \param what     The feature to detect
  47  *                 (MBEDTLS_AESNI_AES or MBEDTLS_AESNI_CLMUL)
  48  *
  49  * \return         1 if CPU has support for the feature, 0 otherwise
  50  */
  51 int mbedtls_aesni_has_support( unsigned int what );
  52
  53 /**
  54  * \brief          AES-NI AES-ECB block en(de)cryption
  55  *
  56  * \param ctx      AES context
  57  * \param mode     MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
  58  * \param input    16-byte input block
  59  * \param output   16-byte output block
  60  *
  61  * \return         0 on success (cannot fail)
  62  */
  63 int mbedtls_aesni_crypt_ecb( mbedtls_aes_context *ctx,
  64                      int mode,
  65                      const unsigned char input[16],
  66                      unsigned char output[16] );
  67
  68 /**
  69  * \brief          GCM multiplication: c = a * b in GF(2^128)
  70  *
  71  * \param c        Result
  72  * \param a        First operand
  73  * \param b        Second operand
  74  *
  75  * \note           Both operands and result are bit strings interpreted as
  76  *                 elements of GF(2^128) as per the GCM spec.
  77  */
  78 void mbedtls_aesni_gcm_mult( unsigned char c[16],
  79                      const unsigned char a[16],
  80                      const unsigned char b[16] );
  81
  82 /**
  83  * \brief           Compute decryption round keys from encryption round keys
  84  *
  85  * \param invkey    Round keys for the equivalent inverse cipher
  86  * \param fwdkey    Original round keys (for encryption)
  87  * \param nr        Number of rounds (that is, number of round keys minus one)
  88  */
  89 void mbedtls_aesni_inverse_key( unsigned char *invkey,
  90                         const unsigned char *fwdkey, int nr );
  91
  92 /**
  93  * \brief           Perform key expansion (for encryption)
  94  *
  95  * \param rk        Destination buffer where the round keys are written
  96  * \param key       Encryption key
  97  * \param bits      Key size in bits (must be 128, 192 or 256)
  98  *
  99  * \return          0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH
 100  */
 101 int mbedtls_aesni_setkey_enc( unsigned char *rk,
 102                       const unsigned char *key,
 103                       size_t bits );
 104
 105 #ifdef __cplusplus
 106 }
 107 #endif
 108
 109 #endif /* MBEDTLS_HAVE_X86_64 */
 110
 111 #endif /* MBEDTLS_AESNI_H */